package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {
    //查询购物车中的数据在数据库中是否存在
    List<ShoppingCart> list(ShoppingCart shoppingCart);

    //根据Id来修改商品数量
    @Update("update shopping_cart set number=#{number} where id=#{id}")
    void updateNumberId(ShoppingCart shoppingCart);

    //向购物车表中插入数据
    @Insert("insert into shopping_cart(name, image, user_id, dish_id, setmeal_id, dish_flavor, number, amount, create_time)" +
            "values (#{name},#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{createTime})"
            )
    void insert(ShoppingCart shoppingCart);

    //查询一个userId对应下的所有数据，展示购物车数据
    @Select("select * from shopping_cart where user_id=#{userId}")
    List<ShoppingCart> showShoppingCart(Long userId);

    //删除购物车中一个商品
    void sub(ShoppingCart shoppingCart);

    //清空购物车
    @Delete("delete from shopping_cart where user_id=#{userId}")
    void clean(Long userId);
}
